Device eos



D. D. RULLMAN.

OPERATINQ/ DEVICE FOR WASHING MACHINES.

vPPucmmu HLED 1AM.18.1918.

1 ,335,754. i y Patnd Apr. 6, 1920.

f "l, 2 33 I: 1;' I i* 36 '7g-i5;

Mmmm; :Immun DAvm D. RULLMA u.

9.a 0. @Mam DAVID D. RULLMAN, OF OMAHA, NEBRASKA.

OPERATING DEVICE FOR WASHING-MACHNS.

Specification f Letters Patent.

Patented Apr. 6, 1920.

Application filed January 1S, 1918. Serial Nc. 212,800.

7h 117/ elio/n it may compra: j

Be it known that I, Davin l). RULLMAN,

a citizen of the United States, and a reSident oi' Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in 0peratingz Devices for lashing Machines, of which the following is a specification.

My invention relates to washing machines of the type employing a reciprocating dasher or pounder, and more particularly to driving or actuating mechanism for such machines. lt ,is the object of my invention to provide a compact, eiiicieiit and durable#meehanisinjfor imparting to` the dasher a reciprocating movement combined with an alternating rotary movement. `A further object of my invention isito provide a driving,f mechanism which may bei` actuated either by belt-power, as where `a suitable motor is available. o1' by hand, the movement received from the latter being" oscillatory. A further object of my invention is to provide for the hand-driven mechanism a handle which may be placed in different positions to relieve fatigue of the op` erator. and to provide for the mechanism a high-speed fly-wheel for steadying the reciprocating or oseillatorymotion. A further object of my invention is to provide in a mechanism of this class a single main drive-gear toothed internally and externally, and imparting motion at different ratios to pinions i engaging;V the internal and external gearteeth.

In the accompanying drawings Figure 1 is a side elevation of `mechanism embodying my invention', Fig. 2 is a vertical scetion thereof on the plane of the line 2,-2 of Fig. 3, Fig. 3.1s a plan view of the mechanism F i r. 4 is a vertical section substan-` tially on the plane of the line 4-4 of Fig. 3, and Fig. 5 is a detail vertical section through the dasher.

There is shown in the rdrawings a portion only of the main body of the Washing machine, which includes a suitable tub or Water receptacle (i. a frame 7, and a top or cover 8 attached to lthe frame by hinges 9 and 10. The actuating;- mechanism, With the exception of the fulcrum-bracket for the.

hand-lever, is carried entirely by the hinged cover, so as to swing up therewith when the cover is Yraised to open the tub.

The cover-attached portion of the hinge lO is integral with the base-plate 11 of the slidahl y actuating;r mechanism. Said base-plate is secured to the cover by screws 12, and has a portion 13 extending laterally to the outer edge of the frame T, Said-portion 13 forming :i baring for a horizontal shaft 14. A fly-wheel l5 is carried on the outer end 4of said shaft, and on the inner end thereof is a pinion 1G which meshes with the external teeth 1T of the main drive-gear. Said drivegear comprises an annular rim having the teeth 1T on its outer side and gear-teeth 18 formed on the inner side thereof, the rim being carried by a dished `web-portion 19 .joining one side thereof. and the web-portion havingir a central laterally extending hub 20. 21 extends up adjacent to the open side of the main gear, and from the upper end of said standard an arm 22 extends first laterally through the openingr within the annular rim and then horizontally adjacent to the vertical part of the dishe tion 19. 0n said arm 22 there is carried a fixed stud which extends .,fhorizontally through the hub 20 to revolubly support the main gear, and on the opposite side of the arm there is a stud 23 on which a inion 24 is revolubiy mounted. Said pinion 24 meshes with the internal gear-teeth 18, the pinion being' eccentric to the gear and `in vfull mesh therewith at a point diametrically opposite the laterally extending portion of the arm 22. 0n the pinion 24 there is carried a crank-pin 25, with which is pivotally connected the lower end of a bar 2G forming part of a yieldable connectingmem-ber.- between the pinion and the dashershaft""27. The flasher-shaft is preferably tubular and extends vertically, being held and rotatably in suitable bearings formed at the upper and lower ends of a shell 28 secured to the cover 8 over an opening near theeenter thereof. The intermediate portion of the vshell 28 is semi-cylindrical in form, and on' the inner side thereof are two helicallyevtending ribs 29 which formiv between them a tracktvay for a roller web-por- 30 car-riedby an arm 31 secured on the inupper end there is a second annular hori 'zontal portion which fits around the upper end-portion of the dasher-shaft. At the upper end ot' the yoke there is a laterally extending stud with which the head ot a rod 34 is pivotally connected. Adjoining;y the head thereof, Said rod 3l is square and extends slidably through a square opening in the head of the bar 26, while the oylindrical lower portion ot the rod passes slidably through a lug 35 on the lower portion of said bar 26. A eoil spring 3G is disposed around the intermediate portion of the rod 34, the upper end of said spring engaging the head of the bar 2G, and the lower end of the spring engaging a cross-pin 3T which extends through the rod adjoining the lug 35. The bar 2G, rod 34 and spring 36 form together a yieldable connecting-rod between the crank-gn 25 and the yoke 32, said connecting-rod being capable of elongation by compression of said spring Pfl as the crosspin 37 is moved up toward Lne head of the bar 26. By means of said connecting-rod, rotation of the crank-pinion 24 causes a vertical reciprocating'movement of the yoke 32, which is communicated to the dashershaft, and during such movement of the shaft the arm 3l is lguided by the roller 3() in the helical trackway between the ribs 29, so as to cause an alternating rotational movement of the shaft, in addition to or combined with the reciprocating motion thereof.

At one side of the frame a bracket 38 is secured thereto, and to said bracket is pivotally connected a lever 39 having in the'upper part thereof two sockets, each adapted to receive the end of a handle 40, so that said handle may extend from the lever in either of the two positions shown by full and dotted lines in Fig. l. From said lever 39 a pitman 41. extends to a Crank-pin 42 on the Web-portion 19 of the main drive-gear, said pitman having a bowed intermediate portion 43, to enable it to pass the hub 20 during rotation ot' the gear. By oscillation of the hand-lever 39, imparted thereto by moving the handle 4() back and forth` the main gear is driven therefrom through the medium of the pitman 41. lVhen starting the movement, should the crank-pin 42 be on a dead-center, the 4fly-wheel 15 may be turned slightly to drive thc gear through the medium of the shaft 14 and pinion 16, and after the fly-wheel is in motion its -momentuin serves to steady the motion of the lgear and to drive thesame during the times when the crank-pin is near its dead-centers. lt will be noted, of course, that owing to the small size of the pinion 16, the rate of rotation of the fly-wheel is quite rapid proportionally to the rate of rotation of the main gear. so that the momentum of the iiy-Wheel will be very effective in producing uniformity of rotation of the gear. Where a suitable motor is available, the same may he am' nerted by belt with the fly-Wheel and the mechanism driven therefrom, in which Case the pltman Ll ie preferably disconnected from the crank-pin 42.

vided externally with a. plurality of semieonilral projecting` parts 4G. open at their lo\\'eremls,the member -l also having' on the inside thereof near its upper end a pertorate horizontal diaphragm 47. shown in Fig. 5. The dasher is secured to the threaded lower end of the tubular shaft 27 by means of two nuts 4R and 49. the latter itting within the apex of the member 45 above the perforate diaphragm 47. and the nut 'lS being' screwed on the shaft above tho dasher. as shown. The nut 49 has a Cylindrical portion extending' below the end of the shaft and inclosing a valve-disk 50 which controls the admission and escape of air through the shaft to and from the inside of the conical member Openings 5l are provided in the sides of the member 45 beneath each ot' the projectingparts 46.

In the operation of the marhine, should there be an excessive amount of material beneath the dasher during1 the downward stroke thereof, excessive stresses upon the drivin" mechanism are prevented by elongation o? the yieldable connecting-rod between the yoke 32 and crank-pin 25, as before described. T he disposal of they pinion 2l within the annular drive-gear, provides a very Compact arrangement of the nierhanism. und avoids the use ot' extra shielding or guarding' means for the gearing, The provision of the two sockets for the handle 4U, by permittinpr the handle to extend either (llagonally or approximately vel-ti alz enables the operator to avoid fatigue by oocasionally changing the position and thus alteringr the dirortion oit' pressures required to move. the handle. 'lhc high-speed fly-wheel facilitates the driving' ot' the mechanism by compellingr a smooth and uniform n'lovement of the rotary parts. The combined reciprocating and rotary movements of the dasher Cause a maximum agitation ot' the materials engaged thereby. so that the machine has the advantages of both the. simple reciprocating dasher type and of the rotatingr or dolly type ot' washingv machines. When opening the tub, by swinging the rover H up about the hinge-axis thereof. the hand-lever swings out from tlul machine far enough to aecominodate the altered location of the Crankpin 42, so that it is unnecessary to disconnect the pitnnui i1 o1' any partF of theI drive mechnnisln.

Now, havingl described my invention. what I iluim und dusiuto sonoro by Lob tors liitvnt is:

l. ln :i washing nnuzhinc having a rtriprotnting dushvr-sluift., :n-tluiting nwun 4 for said duslivr-shnft comprising' un nnnuhnfour having u dishod wth-portion. :i pinion dispost'd within Huid guai' und n'loshiug thvi'owith. :l supporting nrin vxtinding hotwvvn said pinion :ind the weh-portion oi tho uunulur geur :nid (-:irrying studs on whivh tinx guur und pinion :iro rovoluhh, :i rrnnkpin on :mid pinion. means nonna-ting' said t'runlvpin with tho dusholslni'it. und lnouns for :utuuting smid nnnuiur goal',

L. ln :i inw-hunisin oi' thtl rinus dvsci'iht-d. :i horizontal :mn h-.nintr :i hitirnliy otisvt portion mnu-tod with n huppoi't, V tud vxttndingf t'roni oppositv `idt's of Suid nrni. :in nnnului' geur huring n lishnd wvh-portion rovoluhi)Y mountt-d on oln` o1' said studs. :i pinion rovoiuhiy inounttd on tht*` othlr stud, tlngum' oxtondinig` uround thv :lrin und nnhing1 with thi` pinion ut :i point diuniotrif'ziiiy opposittx tln` oiistt portion ot' thiI ul'ni. crunivpin` izli'ritd on opposil'o sidos o1' tho unir und pinion` :ind pitnwn i-onnoi'ttd with said r1-unk-pin a;\|ni nduptod to drivo und he drivin thon-hy Vtsptctivoly.

DE. In u nnrhunisni ot' tho rhino dosri'ihod. :in :irin huvin; r :l izitil'niiy oitstt. portion i-onnottvd with n support` wtudh` txtondiny; hitvruliy i'roni oppositi` nidos of said :1mi` pinion rtw'olnhllv lnountnd on ontof Suid tuds1 ur :innnhir ifo-ur haring iuttrnnl` tooth nushinj,I4 with viid pinion. :t disiud woh vurrying snid :lnnulzir gooi' und rml luhiv niountid on tho othor studi :i pitlnzin i-onint'tvd with lmid unnulzn' goor l'oi` uctuzicing.lf thv suino. u soi'ond pinion xmshing with tug-th fornnd oxtvrnnliy upon the nnnuhiigivin, :ind u H v-whi'vi drin-n hy said Hoi-ond pinion.

Jr. In u niwhunisin of the viuss dvsi'rihod., :i vt-rtic'ully vxtt-nding dnshur-slnift. bonn ing4 in whivh smid shnl't ix hold sfiiduhi)y und rotntzihly. hein-:d guiding inouns for musing; rotary xnowinont of Huid shaft siniultznu-ously with longitudinal. inoveinvnt thon-o1'. n yoko hzlviug' portionb` in which thil slnlt't titfl rm'oiuhiv: inouns ifonlwctingfy Suid .volw :1nd shaft in iixed longitudinal l'vhxtion` :i rotinv :n'tuutingil nwnihor huv'ing :i vrnnit-pin. und :i pilnnin i-onnw'ting said Tonk-piu und voittn Suid pitninn comprijsinn oiidiihiy rouwt-ted parts und rcsiiivnt ini-:ins vit-idoine undvr tnnsion hvtwoun tho vnd o'l tho pitinuu to i-nixhiv Diminution tini'ooi'.

in :l nuithunimn ol' tht` riuso dost-rihtd` :i rovi|irorutnhlir und iotntzlhir)v niountvd limit` u nwnihor inounti'd on lmid shaft :und rotzituhhx rolntivuli' thorvto. :i pitinun mn norttd with A#nid nnunhtu. u rm'oluhir inountvd pinion roniu-i-tod with y :iid pitnmn tor :u'tuuting thtunn. :In uunuizir gozzi' hitting intvi'nui tooth nuhhing with Suid pinion. :i dishud wvl vurrying :mid unnuiur :fvzir. u lixed nnnihot extending`- hctwnun yuid pinion und dishtd wel :ind l'troiuhlv supporting thv sunto. sziid dishtd weh hnvM iuglv :i rrunlt-pin thm'von :it thv nido opposite` szlid pinion. :i pitnnin i'onnoited with nid vrnnlt-pu. :in osviiintzihle hunddowr conntctod with Huid insetti-.mind pitnnin for :wtuiitingr tln` sanno. :i pinion nicshing with t-xtvrnzd tooth on mid :innuluigwn', und .i ii'ivwhoi'i driwu h v will hiSt-nunwd pinion.

I). i). RULLUN.

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